# Niven Lectures

### 1-2 May, 2017

## Sergei Tabachnikov

### Penn State

### 6-7 April, 2016

## Cameron Gordon

### University of Texas at Austin

Professor Gordon will present two lectures, the first intended for an undergraduate audience:

- Undergraduate lecture: “Knots”, 4pm, Wednesday, April 6, 2016 in Fenton Hall 110. There will be pizza after the lecture on the second floor of Fenton; undergraduates especially welcome.

- Colloquium lecture: “Left-orderability of 3-manifold groups”, 4pm, Thursday, April 7 2016 in Straub Hall 145

### 27-28 January 2015

## Pavel Etingof

### MIT

Professor Etingof will present two lectures, the first of which is intended for undergraduates:

- Undergraduate lecture: “Representations of quivers and Gabriel’s theorem”, 4pm, Tuesday, 27 January 2015 in Walnut room, EMU. There will be a reception in Fenton 219 immediately after the talk.
- Colloquium lecture: “Double affine Hecke algebras”, 2pm, Wednesday, 28 January 2015 in Maple room, EMU. After the lecture there will be tea in Fenton 219.

Here is a poster giving more information about the two lectures (PDF).

### 3-4 April 2014

## Mikhail Kapranov

### Yale University

Professor Kapranov will present two lectures, the first of which is intended for undergraduates:

- Undergraduate lecture: “How simple is the simplex?”, 4pm, Thursday, 3 April 2014 in 166 Lawrence Hall. There will be a reception in Fenton 219 immediately after the talk.
- Colloquium lecture: “2-dimensional symmetry of homological algebra”, 4pm, Friday, 4 April 2014 in 208 Deady Hall. Before the lecture there will be tea at 3:15 in Fenton 219.

Here is a poster giving more information about the two lectures (PDF).

### 13-14 May 2013

## Sergey Fomin

### University of Michigan

Professor Fomin will present two lectures, the first of which is intended for undergraduates:

- Undergraduate lecture: “Periodicity of Cluster Transformations”, 4pm, Monday, 13 May 2013 in 208 Deady Hall. There will be a reception in Fenton 219 immediately after the talk.
- Colloquium lecture: “Cluster Algebras and Invariant Theory”, 4pm, Tuesday, 14 May 2013 in 112 Lillis Hall. Before the lecture there will be tea from 3:15 in Fenton 219.

Here is a poster giving more information about the two lectures (PDF).

### 14-15 May 2012

## Ravi Vakil

### Stanford University

Professor Vakil will present two lectures, the first of which is intended for undergraduates:

- Undergraduate lecture: “The Mathematics of Doodling”, Monday, 14 May 2012, 4:00 pm in 208 Fenton Hall.
- Colloquium lecture: “Cutting and Pasting in Algebraic Geometry”, Tuesday, 15 May 2012, 4:00 pm in 208 Fenton Hall.

### 24-25 May 2011

## Denis Auroux

### University of California, Berkeley

Professor Auroux will present two lectures, the first of which is intended for undergraduates:

- Undergraduate lecture: “Seeing into the fourth dimension”, Tuesday, 24 May 2011, 4:00 pm in 100 Willamette Hall. Reception to follow in Willamette Hall atrium.
- Colloquium lecture: “Building 3-manifold invariants by composing correspondences”, Wednesday, 25 May 2011, 4:00 pm in 100 Willamette Hall. Tea from 3:00 pm to 4:00 pm in Willamette Hall atrium.

Here are the abstracts.

### 26-28 April 2010

## Alexei Borodin

### California Institute of Technology

Professor Borodin will present two lectures, the first of which is intended for undergraduates:

- Undergraduate lecture, “Around Longest Increasing Subsequences”, Wednesday, 26 May 2010, 4:00 pm in 166 Lawrence Hall.
- Colloquium lecture, “Interlacing Particle Systems”, Friday, 28 May 2010, 4:00 pm in 208 Deady Hall.

Here is the poster, including the abstracts.

### 21-22 April 2008

## Allen Knutson

### UC San Diego

Professor Knutson will present two lectures, the second of which is intended for undergraduates:

- Colloquium lecture, “The Space of Commuting Matrices, and Statistical Mechanics”, 4pm, 21 April 2008, 208 Deady.
- Undergraduate lecture (likely to be interesting to graduate students too), “Juggling Patterns and Gaussian Elimination”, noon, 22 April 2008, 301 Deady.

Here are the abstracts.

### 11-12 April 2007

## Dan Freed

### University of Texas at Austin

Professor Freed will present two lectures, the first of which is intended for undergraduates:

- Lecture 1: “The geometry and topology of Maxwell’s equations”.

12:00 p.m., Wednesday, 11 April 2007 - Lecture 2: “Secondary differential-geometric invariants, generalized cohomology, and QCD”

4:00 p.m., Thursday, 12 April 2007

### 28 March – 1 April 2005

## Alexandre Kirillov

### University of Pennsylvania

Professor Kirillov will present three lectures, the second two of which are undergraduate lectures:

- Lecture 1: “A tale on two fractals”

4:00 p.m., Monday, 28 March 2005, 106 Deady Hall - Lecture 2: “Self-similar fractal sets and generalized numerical systems”

12:00 p.m., Wednesday, 30 March 2005, 229 McKenzie Hall - Lecture 3: “Descartes theorem and its generalization”

4:00 p.m., Friday, 1 April 2005, 106 Deady Hall

Here are the abstracts for all three talks (pdf).

### 24-25 May 2004

## Peter Sarnak

### Princeton University and Courant Institute

Professor Sarnak will present two lectures, the second of which is intended for undergraduates:

- Lecture 1: “The spectrum of the modular surface”

4:00 p.m., Monday, 24 May 2004, 208 Deady Hall - Lecture 2: “Sums of squares”

12:00 p.m., Tuesday, 25 May 2004, 229 McKenzie Hall

### 14-15 October 2002

## John Conway

### Princeton University

Professor Conway will present two lectures, the second of which is intended for undergraduates:

- Lecture 1: “The 219 space groups”

4:00 p.m., Monday, 14 October 2002, 110 Fenton Hall - Lecture 2: “What’s new about polyhedra and polytopes?”

4:00 p.m., Tuesday, 15 October 2002, 110 Fenton Hall

### 8-10 May 2000

## George Andrews

### Pennsylvania State University

Professor Andrews will present two lectures, the second of which is intended for undergraduates:

- Lecture 1: “Some things Ramanujan may have had up his sleeve”

4:00 p.m., Monday, 8 May 2000, 110 Fenton Hall - Lecture 2: “Ramanujan, continued fractions and teaching mathematics”

4:00 p.m., Wednesday,10 May 2000, 210 Deady Hall

### 26-28 April 1999

## David Eisenbud

### Director of MSRI and University of California, Berkeley

Professor Eisenbud will present three lectures, the last of which is intended for undergraduates:

- Lecture 1: “What free resolutions (might) teach us about geometry”

4:00 p.m., Monday, 26 April 1999, 110 Fenton Hall - Lecture 2: “Free resolutions over exterior algebras”

4:00 p.m., Tuesday, 27 April 1999, 210 Deady Hall - Lecture 3: “How to take a walk using a commutative algebra”

12:00 p.m., Wednesday, 28 April 1999, 210 Deady Hall

### May 1997

## Michael Artin

### Massachusetts Institute of Technology

### June 1996

## Persi Diaconis

### Stanford University